Katy Perry will release her fifth studio album, Smile, on Friday, through major Chinese music streaming sites.

Featuring 12 songs, the album presents two special works for her Chinese fans, Message from Katy and High On Your Supply.

Smile symbolizes her emotional journey towards hope and joy after enduring some of the most difficult times in her life.

"I wrote this record during one of the darkest times of my life," said the singer-songwriter. "Once I figured out there was a better way to look at life, I was seeing it with a different point of view."

The 35-year-old pop star is also expecting her first child with fiancé Orlando Bloom. One of her songs in the new album, What Makes A Woman, is a celebration of womanhood.

"This whole album is my journey toward the light — with stories of resilience, hope and love," she said.